Tweak the built-ins color highlighting in the shader editor
Tweak the built-ins color highlighting in the shader editor

This makes built-ins easier to distinguish from keywords at a
quick glance.

pkowal1982/godot,godotengine/godot,sanikoyes/godot,ZuBsPaCe/godot,MarianoGnu/godot,Faless/godot,godotengine/godot,BastiaanOlij/godot,Shockblast/godot,Valentactive/godot,vnen/godot,josempans/godot,honix/godot,guilhermefelipecgs/godot,Shockblast/godot,Shockblast/godot,guilhermefelipecgs/godot,DmitriySalnikov/godot,sanikoyes/godot,MarianoGnu/godot,Paulloz/godot,honix/godot,godotengine/godot,Valentactive/godot,DmitriySalnikov/godot,Valentactive/godot,Zylann/godot,BastiaanOlij/godot,BastiaanOlij/godot,MarianoGnu/godot,DmitriySalnikov/godot,MarianoGnu/godot,Valentactive/godot,vnen/godot,BastiaanOlij/godot,vnen/godot,Valentactive/godot,ZuBsPaCe/godot,akien-mga/godot,pkowal1982/godot,josempans/godot,sanikoyes/godot,vkbsb/godot,Zylann/godot,vkbsb/godot,Faless/godot,akien-mga/godot,ZuBsPaCe/godot,MarianoGnu/godot,vkbsb/godot,akien-mga/godot,pkowal1982/godot,josempans/godot,Valentactive/godot,DmitriySalnikov/godot,Paulloz/godot,sanikoyes/godot,Zylann/godot,BastiaanOlij/godot,Shockblast/godot,vnen/godot,MarianoGnu/godot,vkbsb/godot,firefly2442/godot,pkowal1982/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,Faless/godot,MarianoGnu/godot,sanikoyes/godot,godotengine/godot,Paulloz/godot,Faless/godot,Paulloz/godot,BastiaanOlij/godot,vkbsb/godot,Faless/godot,Zylann/godot,Zylann/godot,sanikoyes/godot,josempans/godot,vkbsb/godot,josempans/godot,sanikoyes/godot,Faless/godot,Shockblast/godot,vnen/godot,Shockblast/godot,josempans/godot,DmitriySalnikov/godot,vkbsb/godot,ZuBsPaCe/godot,honix/godot,guilhermefelipecgs/godot,vkbsb/godot,firefly2442/godot,honix/godot,vnen/godot,pkowal1982/godot,josempans/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,akien-mga/godot,pkowal1982/godot,Paulloz/godot,josempans/godot,vnen/godot,firefly2442/godot,sanikoyes/godot,Zylann/godot,ZuBsPaCe/godot,MarianoGnu/godot,firefly2442/godot,Zylann/godot,BastiaanOlij/godot,firefly2442/godot,honix/godot,Faless/godot,akien-mga/godot,ZuBsPaCe/godot,ZuBsPaCe/godot,godotengine/godot,DmitriySalnikov/godot,pkowal1982/godot,akien-mga/godot,Paulloz/godot,ZuBsPaCe/godot,Paulloz/godot,guilhermefelipecgs/godot,Shockblast/godot,godotengine/godot,akien-mga/godot,firefly2442/godot,firefly2442/godot,vnen/godot,DmitriySalnikov/godot,Valentactive/godot,honix/godot,godotengine/godot,Valentactive/godot,godotengine/godot,akien-mga/godot,BastiaanOlij/godot,firefly2442/godot,pkowal1982/godot,Zylann/godot,Faless/godot,Shockblast/godot